condition	mean	min	max
4 h after light	16.38504	15.966512	16.803568
8 h after light	18.736780500000002	17.708783	19.764778
12 h after light	21.6359105	21.489281	21.78254
4 h after dark	17.357973	16.686934	18.029012
8 h after dark	16.642516999999998	16.451208	16.833826
12 h after dark	17.867289	17.867289	17.867289